REV. B
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a
ADG526A/ADG527A
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
Analog Devices, Inc., 2002
CMOS Latched
8-/16-Channel Analog Multiplexers
FEATURES
44 V Supply Maximum Rating
VSS to VDD Analog Signal Range
Single/Dual Supply Specifications
Wide Supply Ranges (10.8 V to 16.5 V)
Microprocessor Compatible (100 ns
WR Pulse)
Extended Plastic Temperature Range (–40 C to +85 C)
Low Leakage (20 pA Typ)
Low Power Dissipation (28 mW Max)
Available in DIP, SOIC, PLCC, and LCCC Packages
Superior Alternative to: DG526, DG527
GENERAL DESCRIPTION
The ADG526A and ADG527A are CMOS monolithic analog
multiplexers with 16 channels and dual 8 channels respectively.
On-chip latches facilitate microprocessor interfacing. The
ADG526A switches one of 16 inputs to a common output
depending on the state of four binary addresses and an enable
input. The ADG527A switches one of eight differential inputs
to a common differential output depending on the state of three
binary addresses and an enable input. Both devices have TTL
and 5 V CMOS logic compatible digital inputs.
The ADG526A and ADG527A are designed on an enhanced
LC
2MOS process which gives an increased signal capability of
VSS to VDD and enables operation over a wide range of supply
voltages. The devices can comfortably operate anywhere in the
10.8 V to 16.5 V single or dual supply range. These multiplex-
ers also feature high switching speeds and low RON.
PRODUCT HIGHLIGHTS
1. Single/Dual Supply Specifications with a Wide Tolerance:
The devices are specified in the 10.8 V to 16.5 V range for
both single and dual supplies.
2. Easily Interfaced: The ADG526A and ADG527A can be
easily interfaced with microprocessors. The
WR signal latches
the state of the Address control lines and the Enable line.
The
RS signal clears both the address and enable data in the
latches resulting in no output (all switches off).
RS can be
tied to the microprocessor reset pin.
3. Extended Signal Range: The enhanced LC
2MOS processing
results in a high breakdown and an increased analog signal
range of VSS to VDD.
4. Break-Before-Make Switching: Switches are guaranteed
break-before-make so that input signals are protected against
momentary shorting.
5. Low Leakage: Leakage currents in the range of 20 pA make
these multiplexers suitable for high precision circuits.
FUNCTIONAL BLOCK DIAGRAM
A0
ADG526A
DECODER/
LATCHES
S1
S16
D
ADG527A
S1A
S8B
DA
DB
S8A
S1B
WR
A1 A2 A3 EN
RS
WR
DECODER/
LATCHES
A0 A1 A2 EN
RS